.none {
  display: none;
}
.block {
  display: block;
}
.page {
  background-color: #F8F9FB;
}
.main-box {
  width: 100%;
  background: #F8F9FB;
  position: relative;
  z-index: 2;
}
.main {
  width: 1200px;
  margin: 0 auto;
  padding: 20px;
  display: flex;
  justify-content: space-between;
  position: relative;
}
.main .left {
  width: 79%;
}
.main .right {
  width: 20%;
}
.main .right .right-item {
  width: 20%;
}
.main .right-position {
  position: fixed;
  width: 234px;
}
@media (max-width: 1200px) {
  .main {
    width: 100%;
    padding: 0;
    margin-top: 0;
  }
  .main .article-item {
    padding: 0.2rem;
  }
  .main .left {
    width: 100%;
  }
  .main .right {
    display: none;
  }
}
